my Talon Khorus sounds bad

my Talon Khorus sounds bad...
i've recently purchased a preowned talon khorus loudspeakers (about a year old) ,
at high listening level rock music sounds compressed,
distorted...not what u'd expect from a 14000 dollars
(retail) .
WHAT CAN B WRONG HERE?
those speakers are hooked with a nordost blue haven wire
to a krell 300i integraged amp and a rega planet 2000 cd
player.
thanks and regards